Justin Drew Bieber is a Canadian pop/R&B singer, songwriter and actor. Bieber was discovered in 2008 by Scooter Braun, who came across Bieber's videos on YouTube and later became his manager. Braun arranged for him to meet with Usher in Atlanta, Georgia, and Bieber was soon signed to Raymond Braun Media Group (RBMG), a joint venture between Braun and Usher, and then to a recording contract with Island Records offered by L.A. Reid. Justin Bieber's debut single, "One Time", was released in 2009 and peaked in the top ten in Canada and charted in the top thirty in several international markets. His debut album, My World, followed in November 2009, and was later certified platinum in the United States. He became the first artist to have seven songs from a debut album chart on the Billboard Hot 100. Bieber's first full studio release, My World 2.0, was released in March 2010 and debuted at number one and within the top ten of several countries, and was certified platinum in the United States. It was preceded by the worldwide top-ten single, "Baby". The music video of "Baby" is currently ranked as the most viewed and most discussed YouTube video. Bieber followed-up the release of his debut album with his first headlining tour, the My World Tour, the remix albums My Worlds Acoustic and Never Say Never, The Remixes, and the 3D biopic-concert film Justin Bieber: Never Say Never was released February 11, 2011, directed by Step Up 3D director Jon Chu. It topped the box office with an estimated grossing of $12.4 million on its opening day from 3,105 theaters. It grossed $30.3 million for the weekend. Bieber released his second studio album, Under the Mistletoe in November 2011, which debuted at number one on the Billboard 200. Bieber has been awarded numerous accolades, winning Artist of the Year at the 2010 American Music Awards, being nominated for best New Artist and Best Pop Vocal Album at the 53rd Grammy Awards. Bieber is considered a teen idol.

Justin performed Stevie Wonder's "Someday at Christmas" for U.S. President Barack Obama and first lady Michelle Obama at the White House for Christmas in Washington, which was broadcast on December 20, 2009, on U.S. television broadcaster TNT. Bieber was also one of the performers at Dick Clark's New Year's Rockin' Eve with Ryan Seacrest on December 31, 2009. He was invited to be a vocalist for the remake of We Are The World (a song writen by Michael Jackson & Lionel Richie) for its 25th anniversary to benefit Haiti after the earthquake. He sings the opening line, which was sung by Lionel Richie in the original version.

"Baby", the lead single from his debut album, My World 2.0, which features Ludacris, was released in January 2010 and became his biggest hit thus far, charting at number five in the U.S. and reaching the top ten in seven other countries. Two promo singles "Never Let You Go", and "U Smile" were top thirty hits on the U.S. Hot 100, and top twenty hits in Canada. It debuted at number one on the U.S. Billboard 200, making Bieber the youngest solo male act to top the chart since Stevie Wonder in 1963. My World 2.0 also debuted at number one on the Canadian Albums Chart, Irish Albums Chart, and Australian Albums Chart, and the New Zealand Albums Chart and reached the top ten of fifteen other countries. To promote the album, Bieber appeared on several live programs including The View, the 2010 Kids Choice Awards, Nightline, The Late Show with David Letterman, The Dome and 106 and Park. Bieber collaborated with Sean Kingston on his single "Eenie Meenie" which also appeared on Bieber's debut album. The song reached the top ten in the United Kingdom and Australia, and the top-twenty of most other markets. The second single from My World 2.0, "Somebody to Love", was released April 2010, and a remix was released featuring Bieber's mentor Usher. The single reached number ten in Canada, number fifteen in the United States, and the top twenty in multiple international countries. In June 2010, Bieber went on his first official headlining tour, the My World Tour, starting in Hartford, Connecticut, to promote My World and My World 2.0. In July 2010, it was reported that Bieber was the most searched for celebrity on the Internet.

Bieber guest-starred in the season premiere of the CBS crime drama CSI: Crime Scene Investigation, aired on September 23, 2010. Bieber performed a medley of "U Smile", "Baby", and "Somebody to Love" and briefly played the drums at the 2010 MTV Video Music Awards on September 12, 2010. Bieber announced in October 2010 that he would release an acoustic album, called My Worlds Acoustic. It was released on Black Friday in the United States and featured acoustic versions of songs from his previous albums, and accompanied the release of a completely new song titled "Pray". In June 2011, Bieber was ranked number 2 on the Forbes list of Best-Paid Celebrities under 30. He is the youngest star and 1 of 7 musicians on the list raking in with $53 million earned in a 12 month period. On November 1, 2011, Bieber released Under the Mistletoe, his second studio album. It debuted at number one on the Billboard 200, selling 210,000 copies in its first week of release. Bieber is currently recording his third studio album entitled Believe. Kanye West and Drake are confirmed to be featured on the album. On December 11, 2011, Bieber will be the featured performer on the annual variety special Christmas in Washington, airing on pay-per-view in select cities and the following December 16 on TNT.